<template>
  <div class="users">
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>活动管理</el-breadcrumb-item>
      <el-breadcrumb-item>活动列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <!-- 搜索框 -->
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUsersList">
            <el-button slot="append" icon="el-icon-search" @click="getUsersList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="dialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userList" border tripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态" prop="mg_state">
          <template v-slot="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <!-- 操作区域 -->
        <el-table-column label="操作" width="180px">
          <template v-slot="scope">
            <el-tooltip effect="dark" content="编辑" placement="top-start" :enterable="false">
              <el-button
                type="primary"
                icon="el-icon-edit"
                size="mini"
                @click="showEditDialog(scope.row.id)"
              ></el-button>
            </el-tooltip>
            <el-tooltip effect="dark" content="删除" placement="top-start" :enterable="false">
              <el-button
                type="danger"
                icon="el-icon-delete"
                size="mini"
                @click="removeUserById(scope.row.id)"
              ></el-button>
            </el-tooltip>
            <el-tooltip effect="dark" content="添加角色" placement="top-start" :enterable="false">
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>
    <!-- 添加用户对话框 -->
    <el-dialog title="添加用户" :visible.sync="dialogVisible" width="50%" @close="dialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="ruleForm" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password" type="password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 点击添加底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户对话框 -->
    <el-dialog title="修改用户信息" :visible.sync="editDitlogVisible" width="50%">
      <el-form :model="editForm" :rules="addFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDitlogVisible = false" @close="editDialogClosed">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色按钮对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleDialogClosed"
    >
      <div>
        <p>当前用户:{{userInfo.username}}</p>
        <p>当前角色:{{userInfo.role_name}}</p>
        <p>
          分配新角色:
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in roleList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            ></el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  components: {},
  data () {
    // 自定义表单--邮箱校验规则
    const checkEmail = (rule, value, cb) => {
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        // 合法的邮箱
        return cb()
      }
      cb(new Error('请输入合法的邮箱'))
    }
    return {
      queryInfo: {
        query: '',
        // 当前页显示的总条数
        pagesize: 2,
        // 当前页数
        pagenum: 1
      },
      userList: [], // 用户列表
      total: 0, // 总条数
      // 控制添加用户对话框的显示与隐藏
      dialogVisible: false,
      // 添加用户表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单验证规则
      addFormRules: {
        username: [
          { required: true, message: '账号不能为空', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在3到10个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '账号不能为空', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在3到10个字符', trigger: 'blur' }
        ],
        email: [{ required: true, trigger: 'blur', validator: checkEmail }],
        mobile: [
          { required: true, message: '账号不能为空', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在3到10个字符', trigger: 'blur' }
        ]
      },
      // 修改对话框的控制与隐藏
      editDitlogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      roleList: [],
      // 选中分配的角色
      selectedRoleId: ''
    }
  },
  created () {
    // 获取用户列表
    this.getUsersList()
  },
  methods: {
    // 获取用户列表
    async getUsersList () {
      const { data: res } = await this.$http.get('/users', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) return
      this.userList = res.data.users
      this.total = res.data.total
    },
    // 监听pagesize 改变的事件
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getUsersList()
    },
    // 监听页码值 的改变
    handleCurrentChange (newpage) {
      this.queryInfo.pagenum = newpage
      this.getUsersList()
    },
    // 监听添加用户框消失，重置输入框
    dialogClosed () {
      this.$refs.ruleForm.resetFields()
    },
    // 添加用户
    addUser () {
      this.$refs.ruleForm.validate(async valid => {
        // 添加用户预校验
        if (valid) {
          const { data: res } = await this.$http.post('users', this.addForm)
          if (res.meta.status !== 201) {
            this.$message.error('添加用户失败')
          }
          this.$message.success('添加用户成功')
          // 隐藏 添加用户对话框
          this.dialogVisible = false
          // 重新获取用户列表
          this.getUsersList()
        }
      })
    },
    // 用户状态的改变
    async userStateChanged (userInfo) {
      const { data: res } = await this.$http.put(
        `users/${userInfo.id}/state/${userInfo.mg_state}`
      )
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('更新用户状态失败')
      }
      this.$message.success('更新用户状态成功')
    },
    // 修改用户对话框
    async showEditDialog (id) {
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status === 200) {
        this.editForm = res.data
        this.editDitlogVisible = true
      } else {
        this.$message.error('获取用户信息失败')
      }
    },
    // 监听用户对话框的关闭事件
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 发起修改用户信息的数据请求
    editUserInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        // 发起修改用户信息请求
        const { data: res } = await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
        if (res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败')
        }
        // 关闭对话框
        this.editDitlogVisible = false
        // 刷新数据列表
        this.getUsersList()
        // 提示修改成功
        this.$message.success('用户修改成功')
      })
    },
    // 根据id删除用户信息
    async removeUserById (id) {
      // 弹框提示用户是否确实删除
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果用户确认删除,返回字符串confirm 如果用户取消了删除则返回字符串cancel
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status === 200) {
        this.$message.success('删除用户成功')
        this.getUsersList()
      }
    },
    // 展示分配角色对话框
    async setRole (userInfo) {
      this.userInfo = userInfo
      // 在展示对话框之前获取所有的角色
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.roleList = res.data
      this.setRoleDialogVisible = true
    },
    // 点击按钮, 分配角色
    async saveRoleInfo () {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的  角色')
      }
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
      if (res.meta.status === 200) {
        this.$message.success('更新角色成功')
        this.getUsersList()
        this.setRoleDialogVisible = false
      }
    },
    // 监听分配角色对话框的关闭
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>
<style scoped lang="less">
.el-col-4 {
  position: absolute;
  right: 0;
}
</style>
